The Collaborative International Dictionary
Upgush \Up"gush`\, n.
A gushing upward.
Upgush \Up*gush"\, v. i. To gush upward.
n. (context archaic English) A gushing upward. vb. (context obsolete English): To gush upward.
Usage examples of "upgush".
Barely had they quitted the chamber of the first marsh, where they had met James, than the floor heaved up, and the marsh was vaporized instantly in the sudden upgush of a sea of fire.